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TOPIC: Condensation Issues

Metal Roof Over Garage ExtremelyWet Inside

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I've had a metal 3’ profile roof (18' x 10') fitted to our detached garage. The underside of the roof is extremely wet to the point it drips continuously. We have recently removed the eaves fillers to allow air in but this doesn’t seem to help much. We don’t have the option to lift the roof and insulate but could fit polystyrene underneath albeit not under the rafters. Will this stop the wetness?
Guest User

12/27/2009
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If you coul;d combine insulation with a vapor barrier (polyethylene) and still leave the vented airspace you should be okay. Todd Miller
Todd Miller
Isaiah Industries, Inc.

12/28/2009
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Thanks, when you say "with a vapor barrier (polyethylene)" do you suggest something like a pond liner between the metal roof and the polystyrene?
Guest User

12/28/2009
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